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// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#ifndef RUNTIME_BIN_DARTUTILS_H_
#define RUNTIME_BIN_DARTUTILS_H_
#include "bin/isolate_data.h"
#include "include/dart_api.h"
#include "include/dart_native_api.h"
#include "platform/assert.h"
#include "platform/globals.h"
#include "platform/hashmap.h"
#include "platform/syslog.h"
namespace dart {
namespace bin {
// Forward declarations.
class File;
class OSError;
/* Handles error handles returned from Dart API functions. If a value
* is an error, uses Dart_PropagateError to throw it to the enclosing
* Dart activation. Otherwise, returns the original handle.
*
* This function can be used to wrap most API functions, but API
* functions can also be nested without this error check, since all
* API functions return any error handles passed in as arguments, unchanged.
*/
static inline Dart_Handle ThrowIfError(Dart_Handle handle) {
if (Dart_IsError(handle)) {
Dart_PropagateError(handle);
}
return handle;
}
static inline void* GetHashmapKeyFromString(char* key) {
return reinterpret_cast<void*>(key);
}
class CommandLineOptions {
public:
explicit CommandLineOptions(int max_count)
: count_(0), max_count_(max_count), arguments_(nullptr) {
const int kWordSize = sizeof(intptr_t);
arguments_ = reinterpret_cast<const char**>(malloc(max_count * kWordSize));
if (arguments_ == nullptr) {
max_count_ = 0;
}
}
~CommandLineOptions() {
free(arguments_);
count_ = 0;
max_count_ = 0;
arguments_ = nullptr;
}
void Reset() { count_ = 0; }
int count() const { return count_; }
int max_count() const { return max_count_; }
const char** arguments() const { return arguments_; }
const char* GetArgument(int index) const {
return (index >= 0 && index < count_) ? arguments_[index] : nullptr;
}
void AddArgument(const char* argument) {
if (count_ < max_count_) {
arguments_[count_] = argument;
count_ += 1;
} else {
abort(); // We should never get into this situation.
}
}
void AddArguments(const char** argv, int argc) {
if (count_ + argc >= max_count_) {
abort(); // We should never get into this situation.
}
for (int i = 0; i < argc; ++i) {
arguments_[count_++] = argv[i];
}
}
Dart_Handle CreateRuntimeOptions();
#if defined(DEBUG)
void DebugPrint() const {
for (int i = 0; i < count(); ++i) {
Syslog::PrintErr("[%d] = %s\n", i, GetArgument(i));
}
}
#endif // defined(DEBUG)
void operator delete(void* pointer) { abort(); }
private:
void* operator new(size_t size);
int count_;
int max_count_;
const char** arguments_;
DISALLOW_COPY_AND_ASSIGN(CommandLineOptions);
};
class DartUtils {
public:
// Returns the integer value of a Dart object. If the object is not
// an integer value an API error is propagated.
static int64_t GetIntegerValue(Dart_Handle value_obj);
// Returns the integer value of a Dart object. If the object is not
// an integer value or outside the requested range an API error is
// propagated.
static int64_t GetInt64ValueCheckRange(Dart_Handle value_obj,
int64_t lower,
int64_t upper);
// Returns the intptr_t value of a Dart object. If the object is not
// an integer value or the value is outside the intptr_t range an
// API error is propagated.
static intptr_t GetIntptrValue(Dart_Handle value_obj);
// Checks that the value object is an integer object that fits in a
// signed 64-bit integer. If it is, the value is returned in the
// value out parameter and true is returned. Otherwise, false is
// returned.
static bool GetInt64Value(Dart_Handle value_obj, int64_t* value);
// Returns the string value of a Dart object. If the object is not
// a string value an API error is propagated.
static const char* GetStringValue(Dart_Handle str_obj);
// Returns the boolean value of a Dart object. If the object is not
// a boolean value an API error is propagated.
static bool GetBooleanValue(Dart_Handle bool_obj);
// Returns the boolean value of the argument at index. If the argument
// is not a boolean value an API error is propagated.
static bool GetNativeBooleanArgument(Dart_NativeArguments args,
intptr_t index);
// Returns the integer value of the argument at index. If the argument
// is not an integer value an API error is propagated.
static int64_t GetNativeIntegerArgument(Dart_NativeArguments args,
intptr_t index);
// Returns the intptr_t value of the argument at index. If the argument
// is not an integer value or the value is outside the intptr_t range an
// API error is propagated.
static intptr_t GetNativeIntptrArgument(Dart_NativeArguments args,
intptr_t index);
// Returns the string value of the argument at index. If the argument
// is not a string value an API error is propagated.
static const char* GetNativeStringArgument(Dart_NativeArguments args,
intptr_t index);
static const char* GetNativeTypedDataArgument(Dart_NativeArguments args,
intptr_t index);
static Dart_Handle SetIntegerField(Dart_Handle handle,
const char* name,
int64_t val);
static Dart_Handle SetStringField(Dart_Handle handle,
const char* name,
const char* val);
static bool IsDartSchemeURL(const char* url_name);
static bool IsDartIOLibURL(const char* url_name);
static bool IsDartCLILibURL(const char* url_name);
static bool IsDartHttpLibURL(const char* url_name);
static bool IsDartBuiltinLibURL(const char* url_name);
static bool IsHttpSchemeURL(const char* url_name);
static const char* RemoveScheme(const char* url);
// Returns directory name including the last path separator.
//
// The return value must be `free`d by the caller.
static char* DirName(const char* url);
static void* MapExecutable(const char* name, intptr_t* file_len);
static void* OpenFile(const char* name, bool write);
static void* OpenFileUri(const char* uri, bool write);
static void ReadFile(uint8_t** data, intptr_t* file_len, void* stream);
static void WriteFile(const void* buffer, intptr_t num_bytes, void* stream);
static void CloseFile(void* stream);
static bool EntropySource(uint8_t* buffer, intptr_t length);
static Dart_Handle ReadStringFromFile(const char* filename);
static Dart_Handle MakeUint8Array(const void* buffer, intptr_t length);
static Dart_Handle PrepareForScriptLoading(bool is_service_isolate,
bool trace_loading);
static Dart_Handle SetupPackageConfig(const char* packages_file);
static Dart_Handle SetupIOLibrary(const char* namespc_path,
const char* script_uri,
bool disable_exit);
static bool PostNull(Dart_Port port_id);
static bool PostInt32(Dart_Port port_id, int32_t value);
static bool PostInt64(Dart_Port port_id, int64_t value);
static bool PostString(Dart_Port port_id, const char* value);
static Dart_Handle GetDartType(const char* library_url,
const char* class_name);
// Create a new Dart OSError object with the current OS error.
static Dart_Handle NewDartOSError();
// Create a new Dart OSError object with the provided OS error.
static Dart_Handle NewDartOSError(OSError* os_error);
static Dart_Handle NewDartExceptionWithOSError(const char* library_url,
const char* exception_name,
const char* message,
Dart_Handle os_error);
static Dart_Handle NewDartExceptionWithMessage(const char* library_url,
const char* exception_name,
const char* message);
static Dart_Handle NewDartArgumentError(const char* message);
static Dart_Handle NewDartFormatException(const char* message);
static Dart_Handle NewDartUnsupportedError(const char* message);
static Dart_Handle NewDartIOException(const char* exception_name,
const char* message,
Dart_Handle os_error);
// Create a new Dart String object from a UTF8 encoded C String.
static Dart_Handle NewString(const char* str) {
ASSERT(str != nullptr);
return Dart_NewStringFromUTF8(reinterpret_cast<const uint8_t*>(str),
strlen(str));
}
// Create a new Dart String object from a formatted string.
static Dart_Handle NewStringFormatted(const char* format, ...);
// Allocate length bytes for a C string with Dart_ScopeAllocate.
static char* ScopedCString(intptr_t length) {
char* result = nullptr;
result =
reinterpret_cast<char*>(Dart_ScopeAllocate(length * sizeof(*result)));
return result;
}
// Copy str into a buffer allocated with Dart_ScopeAllocate.
static char* ScopedCopyCString(const char* str) {
size_t str_len = strlen(str);
char* result = ScopedCString(str_len + 1);
memmove(result, str, str_len);
result[str_len] = '\0';
return result;
}
static char* ScopedCStringFormatted(const char* format, ...)
PRINTF_ATTRIBUTE(1, 2);
static char* ScopedCStringVFormatted(const char* format, va_list args);
// Create a new Dart InternalError object with the provided message.
static Dart_Handle NewError(const char* format, ...);
static Dart_Handle NewInternalError(const char* message);
static Dart_Handle LookupBuiltinLib() {
return Dart_LookupLibrary(NewString(kBuiltinLibURL));
}
static bool SetOriginalWorkingDirectory();
static Dart_Handle ResolveScript(Dart_Handle url);
enum MagicNumber {
kAppJITMagicNumber,
kKernelMagicNumber,
kKernelListMagicNumber,
kGzipMagicNumber,
kAotELFMagicNumber,
kAotMachO32MagicNumber,
kAotMachO64MagicNumber,
kAotMachO64Arm64MagicNumber,
kAotCoffARM32MagicNumber,
kAotCoffARM64MagicNumber,
kAotCoffRISCV32MagicNumber,
kAotCoffRISCV64MagicNumber,
kUnknownMagicNumber
};
static constexpr int64_t kMaxMagicNumberSize = 8;
// Note: The check for AOT magic number must match up with the enum
// order above.
static bool IsAotMagicNumber(MagicNumber number) {
return (number >= DartUtils::kAotELFMagicNumber) &&
(number <= DartUtils::kAotCoffRISCV64MagicNumber);
}
// Checks if the buffer is a script snapshot, kernel file, or gzip file.
static MagicNumber SniffForMagicNumber(const char* filename);
// Checks if the buffer is a script snapshot, kernel file, or gzip file.
static MagicNumber SniffForMagicNumber(const uint8_t* text_buffer,
intptr_t buffer_len);
// Global state that stores the original working directory..
static const char* original_working_directory;
static constexpr const char* kDartScheme = "dart:";
static constexpr const char* kAsyncLibURL = "dart:async";
static constexpr const char* kBuiltinLibURL = "dart:_builtin";
static constexpr const char* kConcurrentLibURL = "dart:concurrent";
static constexpr const char* kCoreLibURL = "dart:core";
static constexpr const char* kInternalLibURL = "dart:_internal";
static constexpr const char* kIsolateLibURL = "dart:isolate";
static constexpr const char* kHttpLibURL = "dart:_http";
static constexpr const char* kIOLibURL = "dart:io";
static constexpr const char* kIOLibPatchURL = "dart:io-patch";
static constexpr const char* kCLILibURL = "dart:cli";
static constexpr const char* kCLILibPatchURL = "dart:cli-patch";
static constexpr const char* kUriLibURL = "dart:uri";
static constexpr const char* kHttpScheme = "http:";
static constexpr const char* kVMServiceLibURL = "dart:vmservice";
static void SetEnvironment(dart::SimpleHashMap* environment);
static Dart_Handle EnvironmentCallback(Dart_Handle name);
private:
static Dart_Handle SetWorkingDirectory();
static Dart_Handle PrepareBuiltinLibrary(Dart_Handle builtin_lib,
Dart_Handle internal_lib,
bool is_service_isolate,
bool trace_loading);
static Dart_Handle PrepareCoreLibrary(Dart_Handle core_lib,
Dart_Handle io_lib,
bool is_service_isolate);
static Dart_Handle PrepareAsyncLibrary(Dart_Handle async_lib,
Dart_Handle isolate_lib);
static Dart_Handle PrepareIOLibrary(Dart_Handle io_lib);
static Dart_Handle PrepareIsolateLibrary(Dart_Handle isolate_lib);
static Dart_Handle PrepareCLILibrary(Dart_Handle cli_lib);
static dart::SimpleHashMap* environment_;
DISALLOW_ALLOCATION();
DISALLOW_IMPLICIT_CONSTRUCTORS(DartUtils);
};
class CObject {
public:
// These match the constants in sdk/lib/io/common.dart.
static constexpr int kSuccess = 0;
static constexpr int kArgumentError = 1;
static constexpr int kOSError = 2;
static constexpr int kFileClosedError = 3;
explicit CObject(Dart_CObject* cobject) : cobject_(cobject) {}
Dart_CObject_Type type() { return cobject_->type; }
Dart_TypedData_Type byte_array_type() {
ASSERT(type() == Dart_CObject_kTypedData ||
type() == Dart_CObject_kExternalTypedData);
return cobject_->value.as_typed_data.type;
}
bool IsNull() { return type() == Dart_CObject_kNull; }
bool IsBool() { return type() == Dart_CObject_kBool; }
bool IsInt32() { return type() == Dart_CObject_kInt32; }
bool IsInt64() { return type() == Dart_CObject_kInt64; }
bool IsInt32OrInt64() { return IsInt32() || IsInt64(); }
bool IsIntptr() { return IsInt32OrInt64(); }
bool IsDouble() { return type() == Dart_CObject_kDouble; }
bool IsString() { return type() == Dart_CObject_kString; }
bool IsArray() { return type() == Dart_CObject_kArray; }
bool IsTypedData() { return type() == Dart_CObject_kTypedData; }
bool IsUint8Array() {
return type() == Dart_CObject_kTypedData &&
byte_array_type() == Dart_TypedData_kUint8;
}
bool IsSendPort() { return type() == Dart_CObject_kSendPort; }
bool IsTrue() {
return type() == Dart_CObject_kBool && cobject_->value.as_bool;
}
bool IsFalse() {
return type() == Dart_CObject_kBool && !cobject_->value.as_bool;
}
void* operator new(size_t size) { return Dart_ScopeAllocate(size); }
static CObject* Null();
static CObject* True();
static CObject* False();
static CObject* Bool(bool value);
static Dart_CObject* NewInt32(int32_t value);
static Dart_CObject* NewInt64(int64_t value);
static Dart_CObject* NewIntptr(intptr_t value);
static Dart_CObject* NewDouble(double value);
static Dart_CObject* NewString(const char* str);
static Dart_CObject* NewArray(intptr_t length);
static Dart_CObject* NewUint8Array(const void* data, intptr_t length);
static Dart_CObject* NewExternalUint8Array(intptr_t length,
uint8_t* data,
void* peer,
Dart_HandleFinalizer callback);
static Dart_CObject* NewNativePointer(intptr_t ptr,
intptr_t size,
Dart_HandleFinalizer callback);
static Dart_CObject* NewIOBuffer(int64_t length);
static void ShrinkIOBuffer(Dart_CObject* cobject, int64_t new_length);
static void FreeIOBufferData(Dart_CObject* object);
Dart_CObject* AsApiCObject() { return cobject_; }
// Create a new CObject array with an illegal arguments error.
static CObject* IllegalArgumentError();
// Create a new CObject array with a file closed error.
static CObject* FileClosedError();
// Create a new CObject array with the current OS error.
static CObject* NewOSError();
// Create a new CObject array with the specified OS error.
static CObject* NewOSError(OSError* os_error);
protected:
CObject() : cobject_(nullptr) {}
Dart_CObject* cobject_;
private:
static Dart_CObject* New(Dart_CObject_Type type, int additional_bytes = 0);
static Dart_CObject api_null_;
static Dart_CObject api_true_;
static Dart_CObject api_false_;
static CObject null_;
static CObject true_;
static CObject false_;
private:
DISALLOW_COPY_AND_ASSIGN(CObject);
};
#define DECLARE_COBJECT_CONSTRUCTORS(t) \
explicit CObject##t(Dart_CObject* cobject) : CObject(cobject) { \
ASSERT(type() == Dart_CObject_k##t); \
cobject_ = cobject; \
} \
explicit CObject##t(CObject* cobject) : CObject() { \
ASSERT(cobject != nullptr); \
ASSERT(cobject->type() == Dart_CObject_k##t); \
cobject_ = cobject->AsApiCObject(); \
}
#define DECLARE_COBJECT_TYPED_DATA_CONSTRUCTORS(t) \
explicit CObject##t##Array(Dart_CObject* cobject) : CObject(cobject) { \
ASSERT(type() == Dart_CObject_kTypedData); \
ASSERT(byte_array_type() == Dart_TypedData_k##t); \
cobject_ = cobject; \
} \
explicit CObject##t##Array(CObject* cobject) : CObject() { \
ASSERT(cobject != nullptr); \
ASSERT(cobject->type() == Dart_CObject_kTypedData); \
ASSERT(cobject->byte_array_type() == Dart_TypedData_k##t); \
cobject_ = cobject->AsApiCObject(); \
}
#define DECLARE_COBJECT_EXTERNAL_TYPED_DATA_CONSTRUCTORS(t) \
explicit CObjectExternal##t##Array(Dart_CObject* cobject) \
: CObject(cobject) { \
ASSERT(type() == Dart_CObject_kExternalTypedData); \
ASSERT(byte_array_type() == Dart_TypedData_k##t); \
cobject_ = cobject; \
} \
explicit CObjectExternal##t##Array(CObject* cobject) : CObject() { \
ASSERT(cobject != nullptr); \
ASSERT(cobject->type() == Dart_CObject_kExternalTypedData); \
ASSERT(cobject->byte_array_type() == Dart_TypedData_k##t); \
cobject_ = cobject->AsApiCObject(); \
}
class CObjectBool : public CObject {
public:
DECLARE_COBJECT_CONSTRUCTORS(Bool)
bool Value() const { return cobject_->value.as_bool; }
private:
DISALLOW_COPY_AND_ASSIGN(CObjectBool);
};
class CObjectInt32 : public CObject {
public:
DECLARE_COBJECT_CONSTRUCTORS(Int32)
int32_t Value() const { return cobject_->value.as_int32; }
private:
DISALLOW_COPY_AND_ASSIGN(CObjectInt32);
};
class CObjectInt64 : public CObject {
public:
DECLARE_COBJECT_CONSTRUCTORS(Int64)
int64_t Value() const { return cobject_->value.as_int64; }
private:
DISALLOW_COPY_AND_ASSIGN(CObjectInt64);
};
class CObjectIntptr : public CObject {
public:
explicit CObjectIntptr(Dart_CObject* cobject) : CObject(cobject) {
ASSERT(type() == Dart_CObject_kInt32 || type() == Dart_CObject_kInt64);
cobject_ = cobject;
}
explicit CObjectIntptr(CObject* cobject) : CObject() {
ASSERT(cobject != nullptr);
ASSERT(cobject->type() == Dart_CObject_kInt64 ||
cobject->type() == Dart_CObject_kInt32);
cobject_ = cobject->AsApiCObject();
}
intptr_t Value() {
intptr_t result;
if (type() == Dart_CObject_kInt32) {
result = cobject_->value.as_int32;
} else {
ASSERT(sizeof(result) == 8);
result = static_cast<intptr_t>(cobject_->value.as_int64);
}
return result;
}
private:
DISALLOW_COPY_AND_ASSIGN(CObjectIntptr);
};
class CObjectDouble : public CObject {
public:
DECLARE_COBJECT_CONSTRUCTORS(Double)
double Value() const { return cobject_->value.as_double; }
private:
DISALLOW_COPY_AND_ASSIGN(CObjectDouble);
};
class CObjectString : public CObject {
public:
DECLARE_COBJECT_CONSTRUCTORS(String)
intptr_t Length() const { return strlen(cobject_->value.as_string); }
const char* CString() const { return cobject_->value.as_string; }
private:
DISALLOW_COPY_AND_ASSIGN(CObjectString);
};
class CObjectArray : public CObject {
public:
DECLARE_COBJECT_CONSTRUCTORS(Array)
intptr_t Length() const { return cobject_->value.as_array.length; }
CObject* operator[](intptr_t index) const {
return new CObject(cobject_->value.as_array.values[index]);
}
void SetAt(intptr_t index, CObject* value) {
cobject_->value.as_array.values[index] = value->AsApiCObject();
}
private:
DISALLOW_COPY_AND_ASSIGN(CObjectArray);
};
class CObjectSendPort : public CObject {
public:
DECLARE_COBJECT_CONSTRUCTORS(SendPort)
Dart_Port Value() const { return cobject_->value.as_send_port.id; }
Dart_Port OriginId() const { return cobject_->value.as_send_port.origin_id; }
private:
DISALLOW_COPY_AND_ASSIGN(CObjectSendPort);
};
class CObjectTypedData : public CObject {
public:
explicit CObjectTypedData(Dart_CObject* cobject) : CObject(cobject) {
ASSERT(type() == Dart_CObject_kTypedData);
cobject_ = cobject;
}
explicit CObjectTypedData(CObject* cobject) : CObject() {
ASSERT(cobject != nullptr);
ASSERT(cobject->type() == Dart_CObject_kTypedData);
cobject_ = cobject->AsApiCObject();
}
Dart_TypedData_Type Type() const {
return cobject_->value.as_typed_data.type;
}
intptr_t Length() const { return cobject_->value.as_typed_data.length; }
const uint8_t* Buffer() const { return cobject_->value.as_typed_data.values; }
private:
DISALLOW_COPY_AND_ASSIGN(CObjectTypedData);
};
class CObjectUint8Array : public CObject {
public:
DECLARE_COBJECT_TYPED_DATA_CONSTRUCTORS(Uint8)
intptr_t Length() const { return cobject_->value.as_typed_data.length; }
const uint8_t* Buffer() const { return cobject_->value.as_typed_data.values; }
private:
DISALLOW_COPY_AND_ASSIGN(CObjectUint8Array);
};
class CObjectExternalUint8Array : public CObject {
public:
DECLARE_COBJECT_EXTERNAL_TYPED_DATA_CONSTRUCTORS(Uint8)
intptr_t Length() const {
return cobject_->value.as_external_typed_data.length;
}
uint8_t* Data() const { return cobject_->value.as_external_typed_data.data; }
void* Peer() const { return cobject_->value.as_external_typed_data.peer; }
Dart_HandleFinalizer Callback() const {
return cobject_->value.as_external_typed_data.callback;
}
private:
DISALLOW_COPY_AND_ASSIGN(CObjectExternalUint8Array);
};
/***
* This class is intended for internal use by dart:io implementation and
* has no connection to dart:ffi Pointer class.
*
* It represents a pointer to a native resource of a known type.
*
* The receiving side will only see this pointer as an integer and will not
* see the specified finalizer.
*
* The specified finalizer will only be invoked if the message is not delivered.
**/
class CObjectNativePointer : public CObject {
public:
DECLARE_COBJECT_CONSTRUCTORS(NativePointer)
intptr_t Ptr() const { return cobject_->value.as_native_pointer.ptr; }
intptr_t Size() const { return cobject_->value.as_native_pointer.size; }
Dart_HandleFinalizer Callback() const {
return cobject_->value.as_native_pointer.callback;
}
private:
DISALLOW_COPY_AND_ASSIGN(CObjectNativePointer);
};
class ScopedBlockingCall {
public:
ScopedBlockingCall() { Dart_ThreadDisableProfiling(); }
~ScopedBlockingCall() { Dart_ThreadEnableProfiling(); }
private:
DISALLOW_ALLOCATION();
DISALLOW_COPY_AND_ASSIGN(ScopedBlockingCall);
};
struct MagicNumberData {
static constexpr intptr_t kMaxLength = 8;
intptr_t length;
const uint8_t bytes[kMaxLength];
};
extern MagicNumberData appjit_magic_number;
extern MagicNumberData aotelf_magic_number;
extern MagicNumberData kernel_magic_number;
extern MagicNumberData kernel_list_magic_number;
extern MagicNumberData gzip_magic_number;
} // namespace bin
} // namespace dart
#endif // RUNTIME_BIN_DARTUTILS_H_